Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4FDS callsign genealogy
Currently held by Singleton IV, Floyd D
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K4FDS's current licensee, walking backwards.
- Singleton IV, Floyd DVAgranted 1995-03-29cancelled 2004-06-08
Successor callsigns
Callsigns held now by people who previously held K4FDS.
No current licensee on record previously held this callsign.